Study of adsorption of methylene blue and new methylene blue in liquid?solid interface by slab optical waveguide spectroscopy

Identification of adsorption states of heptyl viologen cation radicals in a thin deposition layer by slab optical waveguide spectroscopy utilizing indium-tin-oxide electrodes

“…We have been studying the adsorption process and adsorbed states of various molecules on solid|liquid interfaces by time-resolved SOWG spectroscopy [22][23][24][25]. The improvement and development of the light incident methods has been allowed us to carry out the highly sensitive time-resolved SOWG measurements [26][27][28][29][30]. By synchronizing spectroscopic observations with electrochemical measurements, we have carried out detailed observations of adsorbed molecules with the potential dependent change on the electrode surface successfully [31][32][33][34][35].…”

Study of adsorption behaviors of meso-tetrakis (4-N-Methylpyridyl) porphine p-Toluenesulfonate at indium–tin-oxide electrode/solution interface by in-situ internal reflection spectroscopy and cyclic voltammetry

“…That is to say, the adsorption of TMPyP on ITO electrode within the first one second was very rapid and then slowly reached to equilibrium. The adsorption process of TMPyP on ITO electrode obeys the Langmuir model [33]. The relationship between τ − 1 and the concentration for TMPyP on ITO is illustrated in Fig.…”

“…1, which was similar to that described previously [29][30][31][32][33]. A MCL-350X (500 W) Xe lamp was used as the excitation source and the light was guided by an optical fiber.…”

“…In the present study, we supposed that the adsorption process between TMPyP and ITO obeys the Langmuir model [33] (1):…”

Evaluation of Polyvinylalcohol:Rhodamine Film Deposition Using Optical Waveguide and Surface Plasmon Resonance Spectroscopies

“…The optical waveguide (OWG) spectroscopy [1][2][3] is a powerful method to observe optical absorption properties of thin films. The OWG spectroscopy is quite sensitive because the evanescent field of a guided light is absorbed many times by a thin film on the core.…”